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Summary for Upper Marlboro

About Upper Marlboro (Click for our profile page)

Located in: Prince George's County (see below)

Time Zone: Upper Marlboro lies in the Eastern Time Zone (EST/EDT)

Telephone Area Codes: 301, 227 & 240<1>

ZIP Codes: 20772-20775, 20792<2>

Elevation: 40 feet [12.19 m] above sea level<3>

From the 2010 US Census (For more detail, see our Census Page for Upper Marlboro)

Population

Year	Population
2019 Est:<4>	675 (6.97% increase since 2010)
2010:	631 (2.62% decrease since 2000)
2000:	648

Total Area:<5> 0.43 sq. miles [1.1 km²] - of which 5.83% is water (0.03 sq. miles [0.1 km²])

Housing Units:<6> 310

GPS Coordinates (Latitude/Longitude)<7>

For the purpose of mapping and calculating distances, we have chosen the following reference point for Upper Marlboro:

Lat: 38.817200° (or 38°49'1" N)

Lon: -76.754500° (or -76°45'16" W)

USGS Topo Map: Upper Marlboro<8>

Federal GNIS/FIPS Codes for Upper Marlboro

GNIS ID: 2391457

FIPS State / Place Code: 24 / 79875

(For more about Federal Codes, see our Misc Page for Upper Marlboro)

About Prince George's County

The town of Upper Marlboro is the County Seat for {Prince George's County}.

From the 2010 US Census (For more detail, see our Census Page for Prince George's)

Population

Year	Population
2019 Est:	909,327 (4.95% increase since 2010)
2010	866,419 (8.1% increase since 2000)
2000:	801,515

Total Area: 498.8 sq. miles [1,292 km²] - of which 3.24% is water (16.14 sq. miles [41.8 km²])

Housing Units: 328,182

Official Website: https://www.princegeorgescountymd.gov/

Federal GNIS/FIPS Codes for Prince George's

GNIS ID: 1714670

FIPS State / County Code: 24 / 033

(For more about Federal Codes, see our Misc Page for Upper Marlboro)

About Maryland

From the US Census

Population

Year	Population
2019 Est:	6,054,954 (4.87% increase since 2010)
2010:	5,773,552 (9.01% increase since 2000)
2000:	5,296,486

Websites for State of Maryland

Official Website: https://www.maryland.gov/

Tourism: https://www.visitmaryland.org/

Parks: https://dnr.maryland.gov/publiclands/

Fishing: https://dnr.maryland.gov/Fisheries/

Hunting: https://dnr.maryland.gov/wildlife/Pages/hunt_trap/home.aspx

Federal GNIS/FIPS Codes for State of Maryland

GNIS ID: 1714934

FIPS State: 24

(For more about Federal Codes, see our Misc Page for Upper Marlboro)

Footnotes ...

<1>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 301 code has been Overlayed with one of the following codes: 227 or 240. New phone numbers in the Upper Marlboro area will be assigned with one of these codes: 301, 227 or 240. As a result, placing a call in the Upper Marlboro area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a town (such as Upper Marlboro). When looking for a ZIP Code, whether Upper Marlboro or elsewhere, it's always best to check the website of the United States Postal Service (USPS). Our list of ZIP Codes for Upper Marlboro includes: 20772, 20773, 20774 & 20775.
<3>	The elevation is an estimate for the area around Upper Marlboro - it will be higher in some places and lower in others.
<4>	Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2019.
<5>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Upper Marlboro. The value given by the Census Bureau reflects their statistical (or sampling) requirements. For example, if there is a cluster of people living just outside of the community's official boundary, the Census-defined area might be expanded to include that group.
<6>	A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).
<7>	Longitude & latitude values may not be the geographic center of Upper Marlboro, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<8>	Name of the USGS 7.5 Minute topographic map which includes Upper Marlboro.